NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
DIN ETS 300263/A1 [CURRENT] references following documents:
| Document number | Edition | Title |
|---|---|---|
| DIN ETS 300263 | 1994-11 | Integrated Services Digital Network (ISDN) - Telephony 7 kHz teleservice - Service description; English version ETS 300263:1994 More |
| ETS 300263 | 1994-03 | Integrated Services Digital Network (ISDN) - Telephony 7 kHz teleservice - Service description More |
